CN106440552A - Heat pump unit - Google Patents

Heat pump unit Download PDF

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Publication number
CN106440552A
CN106440552A CN201610817200.5A CN201610817200A CN106440552A CN 106440552 A CN106440552 A CN 106440552A CN 201610817200 A CN201610817200 A CN 201610817200A CN 106440552 A CN106440552 A CN 106440552A
Authority
CN
China
Prior art keywords
heat exchanger
valve port
throttle
source pump
valve
Prior art date
Application number
CN201610817200.5A
Other languages
Chinese (zh)
Inventor
牟珊珊
张洪亮
李超
Original Assignee
重庆美的通用制冷设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 重庆美的通用制冷设备有限公司 filed Critical 重庆美的通用制冷设备有限公司
Priority to CN201610817200.5A priority Critical patent/CN106440552A/en
Publication of CN106440552A publication Critical patent/CN106440552A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/26Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2313/00Compression machines, plant, or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve

Abstract

The invention discloses a heat pump unit. The heat pump unit comprises a compressor, a reversing module, a first heat exchanger, a second heat exchanger, a first throttling element arranged between a second end of the first heat exchanger and a second end of the second heat exchanger, a first refrigeration flowing channel connected between the second end of the first heat exchanger and a first end of the first throttling element, a second refrigeration flowing channel connected between a second end of the first throttling element and the second end of the second heat exchanger, a first heating flowing channel connected between the second end of the second heat exchanger and the first end of the first throttling element, a second heating flowing channel connected between the second end of the first heat exchanger and the second end of the first throttling element, and a liquid storer serially connected to the first heating flowing channel. The heat pump unit obtains a higher supercooling degree during refrigerating under the condition of the same refrigerant filling quantity so as to achieve higher refrigerating capacity.

Description

Source pump
Technical field
The present invention relates to freezing and heating technical field, especially relate to a kind of source pump.
Background technology
Usually, in order to increase circulating refrigerant amount when source pump heats it will usually arrange reservoir in systems.So And, the source pump in correlation technique, in kind of refrigeration cycle, in the case of obtaining identical degree of supercooling, stream is through reservoir The coolant injection amount of system can be increased, if coolant injection amount is identical, refrigeration circuit can reduce obtaining of degree of supercooling through reservoir Take, lead to cooling system amount to reduce.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention carries Go out a kind of source pump, in kind of refrigeration cycle, coolant without reservoir, only when heating circulation, just through reservoir, with All compared by the system circulation of reservoir during cooling and warming, under coolant injection amount same case, can obtain bigger during refrigeration Degree of supercooling, obtains bigger refrigerating capacity;In the case of obtaining identical degree of supercooling, then can reduce the coolant injection of system Amount, reduces cost.
Source pump according to embodiments of the present invention, including:Compressor, described compressor has air vent and gas returning port; Commutation assembly, described commutation assembly has the first valve port to the 4th valve port, in the first valve port and the second valve port and the 3rd valve port One commutation connection, the 4th valve port connected with another commutation in the second valve port and the 3rd valve port, described first valve port and institute State air vent to be connected, described 4th valve port is connected with described gas returning port;First Heat Exchanger, the first end of described First Heat Exchanger with Described second valve port is connected;Second heat exchanger, the first end of described second heat exchanger is connected with described 3rd valve port;First throttle Element, described first throttle element is located between the second end of described First Heat Exchanger and the second end of described second heat exchanger; First refrigeration circuit and the second refrigeration circuit, described first refrigeration circuit is connected to the second end of described First Heat Exchanger and described Between the first end of first throttle element, described first refrigeration circuit is connected with from described First Heat Exchanger to described first segment First check valve of one-way conduction on the direction of fluid element, described second refrigeration circuit is connected to the of described first throttle element Between second end of two ends and described second heat exchanger, described second refrigeration circuit is connected with from described first throttle element to Second check valve of one-way conduction on the direction of described second heat exchanger;First heats stream and second heats stream, and described One heats stream is connected between the second end of described second heat exchanger and the first end of described first throttle element, and described first Heat be connected with stream the 3rd unidirectional from described second heat exchanger to one-way conduction the direction of described first throttle element Valve, described second heat stream be connected to the second end of described First Heat Exchanger and described first throttle element the second end it Between, described second heats and is connected with one-way conduction from described first throttle element to the direction of described First Heat Exchanger on stream The 4th check valve;Reservoir, described reservoir is connected on described first and heats on stream, and described reservoir is located at the described 3rd Between check valve and described second heat exchanger.
Source pump according to embodiments of the present invention, is heated on stream by reservoir is connected on first, and makes its position Between the 3rd check valve and the second heat exchanger, thus coolant does not pass through reservoir during kind of refrigeration cycle, only cold when heating circulation Matchmaker just passes through reservoir, when this is with the cooling and warming in correlation technique all by the source pump of reservoir compared with, can be cold Under matchmaker's charging amount same case, obtain more big supercooling degree during refrigeration, so that source pump obtains bigger refrigerating capacity, carry High refrigeration;In the case of obtaining identical degree of supercooling, it is possible to reduce the coolant injection amount of source pump during refrigeration, reduce into This.In addition, in heating operation, the coolant in the second heat exchanger can partly migrate to reservoir to reduce in the second heat exchanger Coolant amount of liquid storage, improve the second heat exchanger heat exchange efficiency, also help during power failure to the heat exchange in the second heat exchanger simultaneously The anti-frost protection of pipe.
According to some embodiments of the present invention, source pump also includes economizer, and described economizer includes mutual heat exchange First flow path and second flow path, the first end of described first flow path is connected with the first end of described first throttle element, first-class Second end on road is connected with described first check valve and described 3rd check valve, and the arrival end of described second flow path is connected to described Between the first end of the first end of first flow path and described first throttle element, the port of export of described second flow path and described compression The gas supplementing opening of machine is connected, and the arrival end of described second flow path is in series with the second restricting element.
According to some embodiments of the present invention, described second heat exchanger is falling-film heat exchanger, in described second heat exchanger It is provided with refrigerant flow and current road, described refrigerant flow has first interface to the 3rd interface, described first interface and described the Three valve ports are connected, and described second interface is connected with the second check valve, and described 3rd interface is connected with reservoir.
Specifically, source pump also includes antifreeze water route and control device, the two ends in described antifreeze water route respectively with described The water inlet on current road is connected with outlet, and described antifreeze water route is connected with water circulating pump, when described source pump stops work When making, described control device controls water circulating pump to open.
Specifically, described antifreeze water route is provided with heating member for the medium water in heating and anti-freezing water route.
Specifically, described heating member includes the heated shell for holding medium water and electric heating part, described heated shell It is connected between described water circulating pump and described current road, described electric heating part is located in described heated shell and is used for heating medium Water.
According to some embodiments of the present invention, source pump also includes oil eliminator, described separating of oil is connected in described row Between QI KOU and described first valve port.
According to some embodiments of the present invention, source pump also includes gas-liquid separator, and described gas-liquid separator is connected in Between described 4th valve port and described gas returning port.
Alternatively, described commutation assembly is cross valve.
Alternatively, described first throttle element is electric expansion valve.
Brief description
Fig. 1 is the schematic diagram of source pump according to some embodiments of the invention;
Fig. 2 is the source pump according to some embodiments of the invention schematic diagram in refrigeration;
Fig. 3 is the source pump according to some embodiments of the invention schematic diagram when heating.
Reference:
Source pump 100;
Compressor 1;Air vent a;Gas returning port b;Gas supplementing opening m;
Commutation assembly 2;First valve port c;Second valve port d;3rd valve port e;4th valve port f;
First Heat Exchanger 3;
Second heat exchanger 4;First interface g;Second interface h;3rd interface i;Water inlet j;Outlet k;
First throttle element 5;
First heats stream 6;3rd check valve 6a;
Second heats stream 7;4th check valve 7a;
First refrigeration circuit 8;First check valve 8a;
Second refrigeration circuit 9;Second check valve 9a;
Reservoir 10;
Economizer 11;First flow path 11a;Second flow path 11b;Second restricting element 11c
Antifreeze water route 12;Water circulating pump 12a;Heating member 12b;
Oil eliminator 13;
Gas-liquid separator 14;
Liquor separator 15.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings.Below with reference to The embodiment of Description of Drawings is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time The orientation of instruction such as pin ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship be based on orientation shown in the drawings or Position relationship, is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three Individual etc., unless otherwise expressly limited specifically.
Below with reference to Fig. 1-Fig. 3, source pump 100 according to embodiments of the present invention is described, source pump 100 can be used for adjusting Section indoor temperature for example to indoor environment refrigeration or heats.For example, source pump 100 is net for air-source heat pump units.
As shown in Figure 1-Figure 3, source pump 100 according to embodiments of the present invention, can include compressor 1, commutation assembly 2nd, First Heat Exchanger 3, the second heat exchanger 4, first throttle element 5, the first refrigeration circuit 8, the second refrigeration circuit 9, first heat Stream 6, second heat stream 7 and reservoir 10.Wherein, when source pump 100 is freezed, First Heat Exchanger 3 is condenser, the Two heat exchangers 4 are vaporizer, and when source pump 100 heats, First Heat Exchanger 3 is vaporizer, and the second heat exchanger 4 is condensation Device.
Specifically, compressor 1 has air vent a and gas returning port b, and the coolant after heat exchange can return from the gas returning port b of compressor 1 Return in compressor 1, coolant forms the coolant of High Temperature High Pressure after being compressed by compressor 1 in compressor 1, discharge from air vent a To in the refrigerant flow of source pump 100.Alternatively, compressor 1 is screw compressor, certainly the invention is not restricted to this, In other embodiments, compressor 1 can also be other compressors such as centrifugal compressor.It should be noted that compressor 1 Structure and operation principle by as it is known to those skilled in the art that be not described in detail herein.
Commutation assembly 2 has the first valve port c to the 4th valve port f, wherein, the first valve port c and the second valve port d and the 3rd valve port One of e commutation connection, the 4th valve port f with the second valve port d and the 3rd valve port e another commutate connect that is to say, that When the first valve port c is connected with the second valve port d, the 4th valve port f is connected with the 3rd valve port e, as the first valve port c and the 3rd valve port e During connection, the 4th valve port f is connected with the second valve port d.In addition, the first valve port c is connected with air vent a, the 4th valve port f and gas returning port B is connected, thus commutation assembly 2 is connected to the circulation in order to coolant in refrigerant flow.
Preferably, commutation assembly 2 is cross valve, and when cross valve power-off, the first valve port c is connected with the second valve port d, the 4th Valve port f is connected with the 3rd valve port e, and when cross valve is energized, the first valve port c is connected with the 3rd valve port e, the 4th valve port f and second Valve port d connects.But it is understood that, commutation assembly 2 can also be formed as other elements, as long as having the first valve port c extremely 4th valve port f and can achieve commutate.
The first valve port c due to the assembly 2 that commutates can with the one of commutation in the second valve port d and the 3rd valve port e even Logical, the 4th valve port f is connected with another commutation in the 3rd valve port e and the second valve port d, and this allows source pump 100 to exist Change between refrigeration mode and heating mode, it is achieved thereby that the refrigerating function of source pump 100 and heat-production functions.
The first end (for example, the left end shown in Fig. 1-Fig. 3) of First Heat Exchanger 3 is connected with the second valve port d, the second heat exchange The first end of device 4 is connected with the 3rd valve port e, and first throttle element 5 is located at the second end (for example, Fig. 1-Fig. 3 of First Heat Exchanger 3 Shown in right-hand member) and the second end of the second heat exchanger 4 between to carry out reducing pressure by regulating flow to flowing through its coolant.Alternatively, One heat exchanger 3 is finned heat exchanger.It is provided with liquor separator 15 at the second end of finned heat exchanger, when source pump 100 heats When, coolant can flow to finned heat exchanger after 15 points of liquid of liquor separator.
Alternatively, first throttle element 5 is capillary tube, electric expansion valve or heating power expansion valve.
Specifically, as depicted in figs. 1 and 2, the first refrigeration circuit 8 is connected to the second end (for example, figure of First Heat Exchanger 3 Right-hand member shown in 1- Fig. 3) and the first end (for example, the right-hand member shown in Fig. 1-Fig. 3) of first throttle element 5 between, first The first check valve 8a from First Heat Exchanger 3 to one-way conduction the direction of first throttle element 5 is connected with refrigeration circuit 8, Second refrigeration circuit 9 is connected to the second end (for example, the left end shown in Fig. 1-Fig. 3) and second heat exchange of first throttle element 5 Between second end of device 4, the second refrigeration circuit 9 is connected with unidirectional from the direction of first throttle element the 5 to the second heat exchanger 4 Second check valve 9a of conducting;As shown in figures 1 and 3, first heat the second end and that stream 6 is connected to the second heat exchanger 4 Between the first end of one restricting element 5, first heats the side being connected with stream 6 from the second heat exchanger 4 to first throttle element 5 3rd check valve 6a of one-way conduction upwards, second heats the second end and the first throttle unit that stream 7 is connected to First Heat Exchanger 3 Between second end of part 5, second heats and is connected with stream 7 from first throttle element 5 to unidirectional the direction of First Heat Exchanger 3 4th check valve 7a of conducting, reservoir 10 is connected on first and heats on stream 6, and reservoir 10 is located at the 3rd check valve 6a and the Between two heat exchangers 4.
Specifically, when source pump 100 is freezed, the first valve port c is connected with the second valve port d, the 3rd valve port e and the 4th Valve port f connects, and the coolant of the High Temperature High Pressure discharged from the air vent a of compressor 1 can flow through the first valve port c and the second valve port d To First Heat Exchanger 3, coolant in First Heat Exchanger 3 and around environment carry out heat exchange, subsequently discharge from First Heat Exchanger 3, Flow to the first refrigeration circuit 8, and after the first check valve 8a on the first refrigeration circuit 8, flow to first throttle element 5, cold Matchmaker, after first throttle element 5 reducing pressure by regulating flow, flows to the second refrigeration circuit 9, and on the second refrigeration circuit 9 second is unidirectional After valve 9a, flow to the second heat exchanger 4, coolant from the second heat exchanger 4 outflow after, through the 3rd valve port e and the 4th valve port f and pressure The gas returning port b of contracting machine 1 returns to compressor 1, reciprocal with this.
When source pump 100 heats, the first valve port c is connected with the 3rd valve port e, and the second valve port d and the 4th valve port f is even Logical, the coolant discharged from the air vent a of compressor 1 flows to the second heat exchanger 4 through the first valve port c and the 3rd valve port e, and the Heat exchange is realized, coolant flows to first after the second heat exchanger 4 outflow and heats stream 6, and flows to reservoir 10 in two heat exchangers 4, Subsequently coolant flows out and after the 3rd check valve 6a from reservoir 10, flows to first throttle element 5, and coolant is through first throttle unit After part 5 reducing pressure by regulating flow, flow to second and heat stream 7, and after second heats the 4th check valve 7a on stream 7, flow to One heat exchanger 3, coolant after First Heat Exchanger 3 outflow through the second valve port d and the 4th valve port f, and the return-air through compressor 1 Mouth b returns to compressor 1, reciprocal with this.
Source pump 100 according to embodiments of the present invention, is heated on stream 6 by reservoir 10 is connected on first, and It is located between the 3rd check valve 6a and the second heat exchanger 4, thus coolant does not pass through reservoir 10 during kind of refrigeration cycle, only in system During thermal cycle, coolant just passes through reservoir 10, this with correlation technique in cooling and warming when all by the source pump phase of reservoir Ratio can obtain more big supercooling degree, so that source pump 100 obtains more under coolant injection amount same case during refrigeration Big refrigerating capacity, improves refrigeration;In the case of obtaining identical degree of supercooling, it is possible to reduce source pump 100 during refrigeration Coolant injection amount, reduces cost.In addition, in heating operation, the coolant in the second heat exchanger 4 can partly migrate to reservoir To reduce the coolant amount of liquid storage in the second heat exchanger 4 in 10, improve the heat exchange efficiency of the second heat exchanger 4, also help simultaneously and stop Anti-frost protection to the heat exchanger tube in the second heat exchanger 4 when electric.
In some embodiments of the invention, the second heat exchanger 4 is falling-film heat exchanger or full-liquid type heat exchanger.
Specifically, as shown in Figure 1-Figure 3, the second heat exchanger 4 is falling-film heat exchanger, is provided with coolant in the second heat exchanger 4 Stream and current road, refrigerant flow has first interface g to the 3rd interface i, and first interface g is connected with the 3rd valve port e, and second connects Mouth h is connected with the second check valve 9a, and the 3rd interface i is connected with reservoir 10.Herein it is understood that first interface g is upper The first end of the second heat exchanger 4 stated, second interface h and the 3rd interface i are the second end of the second above-mentioned heat exchanger 4.By In downward film evaporator, there is the advantages of heat exchange efficiency is high, and the charging amount of coolant is few, be falling film type by making the second heat exchanger 4 Heat exchanger, is conducive to the efficiency of raising system, reduces cost, and when source pump 100 carries out reverse cycle defrosting and runs, by Relatively low in the liquid level of refrigerant flow, compare full-liquid type and dry type heat exchanger, the setting of falling-film heat exchanger can greatly reduce inhales Gas carrying liquid risk, reduces the liquid hammer probability of compressor 1, improves source pump 100 performance.
Specifically, when source pump 100 is freezed, the first valve port c is connected with the second valve port d, the 3rd valve port e and the 4th Valve port f connects, and the coolant of the High Temperature High Pressure discharged from the air vent a of compressor 1 can flow through the first valve port c and the second valve port d To First Heat Exchanger 3, coolant in First Heat Exchanger 3 and around environment carry out heat exchange, subsequently discharge from First Heat Exchanger 3, Flow to the first refrigeration circuit 8, and after the first check valve 8a on the first refrigeration circuit 8, flow to first throttle element 5, cold Matchmaker, after first throttle element 5 reducing pressure by regulating flow, flows to the second refrigeration circuit 9, and on the second refrigeration circuit 9 second is unidirectional After valve 9a, flow to the refrigerant flow of falling-film heat exchanger through second interface h, coolant in refrigerant flow with current road in matchmaker Jie's water carries out heat exchange, and subsequent coolant flows out and through the 3rd valve port e and the 4th valve port f from the first interface g of falling-film heat exchanger And the gas returning port b of compressor 1 returns to compressor 1, the medium water after heat exchange in current road then flow in indoor environment with room Interior environment carries out heat exchange to reduce indoor temperature.
When source pump 100 heats, the first valve port c is connected with the 3rd valve port e, and the second valve port d and the 4th valve port f is even Logical, the coolant discharged from the air vent a of compressor 1 flows to fall through the first valve port c and the 3rd valve port e and through first interface g The refrigerant flow of membrane heat exchanger, coolant carries out heat exchange with the medium water in current road in refrigerant flow, and subsequent coolant is from fall 3rd interface i of membrane heat exchanger flows out and flows to first and heats stream 6, then flows to reservoir 10, subsequent coolant is from liquid storage Device 10 flows out and after the 3rd check valve 6a, flows to first throttle element 5, coolant after first throttle element 5 reducing pressure by regulating flow, Flow to second and heat stream 7, and after second heats the 4th check valve 7a on stream 7, flow to First Heat Exchanger 3, coolant Through the second valve port d and the 4th valve port f after First Heat Exchanger 3 flows out, and return to compression through the gas returning port b of compressor 1 Machine 1;Medium water after heat exchange in current road then flows in indoor environment and carries out heat exchange to improve indoor temperature with indoor environment.By This, when heating, the 3rd interface i of falling-film heat exchanger is connected with reservoir 10, thus in unexpected power failure, falling film type heat exchange Coolant in the refrigerant flow of device can be from migrate to reservoir 10, for use as the anti-frost protection to refrigerant flow when having a power failure.
Specifically, the second heat exchanger 4 includes the package for the coolant that circulates and the heat exchanger tube for circulating medium water, heat exchange Pipe may be provided in package, and the space between package and heat exchanger tube limits above-mentioned refrigerant flow, and heat exchanger tube limits above-mentioned Current road.
Further, as shown in Figure 1-Figure 3, source pump 100 also includes antifreeze water route 12 and control device, antifreeze water route 12 two ends are connected with the water inlet j and outlet k on current road respectively, antifreeze water route 12 is connected with water circulating pump 12a, works as heat When pump assembly 100 quits work, control device controls water circulating pump 12a to open, and this can be easy to medium water in antifreeze water route 12 Circulation so that in antifreeze water route 12 medium coolant-temperature gage equilibrium, it is to avoid because in current road medium water local temperature too low and The medium water freezing causing, improves the antifreezing effect on current road.
Specifically, antifreeze water route 12 is provided with heating member 12b for the medium water in heating and anti-freezing water route 12, thus carrying The water temperature of the medium water in high antifreeze water route 12, and then improve the antifreezing effect on current road, it is to avoid because source pump 100 is long-time The icing of medium water in the current road shut down and cause, when source pump 100 is run again, is conducive to improving source pump 100 reliabilities of operation.
Specifically, heating member 12b includes the heated shell for holding medium water and electric heating part, and heated shell is connected on It is partly the going up in addition to water circulating pump 12a that heated shell is connected on antifreeze water route 12 between water circulating pump 12a and current road, Electric heating part is located at and is used for heating medium water in heated shell, thus when the heated housing of medium current, electric heating part is to matchmaker Jie's water is heated to improve the water temperature of medium water, improves the antifreezing effect on current road.Preferably, electric heating part electrically heated rod, At least a portion of electrically heated rod extend in heated shell, thus directly heating to the medium water in heated shell, improving and passing Thermal effect.
In some embodiments of the invention, as shown in Figure 1-Figure 3, source pump 100 also includes economizer 11, economizer 11 first flow path 11a including mutual heat exchange and second flow path 11b, the first end of first flow path 11a (for example, is shown in Fig. 1-Fig. 3 The upper end going out) it is connected with the first end of first throttle element 5, the second end of first flow path 11a is (for example, shown in Fig. 1-Fig. 3 Lower end) it is connected with the first check valve 8a and the 3rd check valve 6a, the arrival end of second flow path 11b is connected to first flow path 11a Between the first end of first end and first throttle element 5, the port of export of second flow path 11b is connected with the gas supplementing opening m of compressor 1, The arrival end of second flow path 11b is in series with the second restricting element 11c.Specifically, from condenser (First Heat Exchanger 3 during refrigeration For condenser, when heating, the second heat exchanger 4 is condenser) coolant that flows out can flow to warp through the second end of first flow path 11a Ji device 11, flows out economizer 11 and flows to first throttle element 5 through the first end of first flow path 11a, positioned at first flow path 11a First end and the first end of first throttle element 5 between coolant can flow to the second restricting element 11c, this part coolant is through Be formed as the coolant of low-temp low-pressure after two restricting element 11c reducing pressure by regulating flows and flow to second flow path 11b, in second flow path 11b Low-temp low-pressure coolant carries out heat exchange with the coolant in first flow path 11a, and the coolant in subsequent second flow path 11b flows to compressor 1 Gas supplementing opening m.Thus, not only favorably improve the degree of supercooling of the coolant flowing out from first flow path 11a, improve cooling system amount, and And the coolant from the outflow of second flow path 11b can add in compressor 1 through the gas supplementing opening m of compressor 1, it is possible to decrease compressor 1 Delivery temperature, improve source pump 100 reliability of operation.
Alternatively, the second restricting element 11c is electric expansion valve, heating power expansion valve or capillary tube.
In some embodiments of the invention, source pump 100 also includes oil eliminator 13, oil eliminator 13 row of being connected in Between QI KOU a and the first valve port c, the oil-containing coolant discharged from the air vent a of compressor 1 can flow first to oil eliminator 13, contains Oil cooling matchmaker realizes coolant with lubrication oil separating in oil eliminator 13, and the coolant isolated flows to the first valve port c, isolates Lubricating oil flows back to compressor 1, thus, can largely reduce the lubricants capacity in the refrigerant flow flowing to source pump 100, The lubricating oil isolated can be made more swimmingly to be back in compressor 1, be conducive to improving performance and the operation of source pump 100 Reliability.
In some embodiments of the invention, source pump 100 also includes gas-liquid separator 14, and gas-liquid separator 14 is contacted Between the 4th valve port f and gas returning port b, the coolant flowing out from the 4th valve port f can flow first to gas-liquid separator 14, and coolant is in gas The separation of gaseous coolant and liquid refrigerants is can achieve, the gaseous coolant isolated then returns through gas returning port b in liquid/gas separator 14 To compressor 1, liquid refrigerants is then stored in gas-liquid separator 14, thus avoiding compressor 1 to produce liquid hammer, improves compressor 1 reliability of operation.
The other structures of source pump 100 according to embodiments of the present invention all become prior art, and by this area skill Known to art personnel, it will not be described herein.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral;Can be that machinery connects Connect or electrically connect or can communicate each other;Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, permissible It is the connection of two element internals or the interaction relationship of two elements, limit unless otherwise clear and definite.For this area For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible It is the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (10)

1. a kind of source pump is it is characterised in that include:
Compressor, described compressor has air vent and gas returning port;
Commutation assembly, described commutation assembly has the first valve port to the 4th valve port, the first valve port and the second valve port and the 3rd valve port One of commutation connection, the 4th valve port connected with another commutation in the second valve port and the 3rd valve port, described first valve port It is connected with described air vent, described 4th valve port is connected with described gas returning port;
First Heat Exchanger, the first end of described First Heat Exchanger is connected with described second valve port;
Second heat exchanger, the first end of described second heat exchanger is connected with described 3rd valve port;
First throttle element, described first throttle element is located at the second end of described First Heat Exchanger and described second heat exchanger Between second end;
First refrigeration circuit and the second refrigeration circuit, described first refrigeration circuit be connected to described First Heat Exchanger the second end and Between the first end of described first throttle element, described first refrigeration circuit is connected with from described First Heat Exchanger to described First check valve of one-way conduction on the direction of one restricting element, described second refrigeration circuit is connected to described first throttle element The second end and the second end of described second heat exchanger between, described second refrigeration circuit is connected with from described first throttle unit Part is to the second check valve of one-way conduction on the direction of described second heat exchanger;
First heats stream and second heats stream, described first heat stream be connected to described second heat exchanger the second end and Between the first end of described first throttle element, described first heats and is connected with stream from described second heat exchanger to described 3rd check valve of one-way conduction on the direction of one restricting element, described second heats stream is connected to described First Heat Exchanger Between second end of the second end and described first throttle element, described second heat be connected with stream from described first throttle unit Part is to the 4th check valve of one-way conduction on the direction of described First Heat Exchanger;
Reservoir, described reservoir is connected on described first and heats on stream, described reservoir be located at described 3rd check valve and Between described second heat exchanger.
2. it is characterised in that also including economizer, described economizer includes mutually source pump according to claim 1 The first flow path of heat exchange and second flow path, the first end of described first flow path is connected with the first end of described first throttle element, Second end of first flow path is connected with described first check valve and described 3rd check valve, and the arrival end of described second flow path connects Between the first end and the first end of described first throttle element of described first flow path, the port of export of described second flow path and institute The gas supplementing opening stating compressor is connected, and the arrival end of described second flow path is in series with the second restricting element.
3. source pump according to claim 1 it is characterised in that described second heat exchanger be falling-film heat exchanger, institute State and in the second heat exchanger, be provided with refrigerant flow and current road, described refrigerant flow has first interface to the 3rd interface, described One interface is connected with described 3rd valve port, and described second interface is connected with the second check valve, described 3rd interface and reservoir phase Even.
4. source pump according to claim 3 is it is characterised in that also including antifreeze water route and control device, described anti- The two ends freezing water route are connected with the water inlet on described current road and outlet respectively, and described antifreeze water route is connected with recirculated water Pump, when described source pump quits work, described control device controls water circulating pump to open.
5. source pump according to claim 4 is it is characterised in that described antifreeze water route is provided with heating member for adding Medium water in the antifreeze water route of heat.
6. source pump according to claim 5 is it is characterised in that described heating member is included for holding adding of medium water Hot housing and electric heating part, described heated shell is connected between described water circulating pump and described current road, described electric heating part It is located in described heated shell and be used for heating medium water.
7. source pump according to claim 1 is it is characterised in that also include oil eliminator, described separating of oil is connected in Between described air vent and described first valve port.
8. source pump according to claim 1 is it is characterised in that also include gas-liquid separator, described gas-liquid separator It is connected between described 4th valve port and described gas returning port.
9. source pump according to claim 1 is it is characterised in that described commutation assembly is cross valve.
10. source pump according to claim 1 is it is characterised in that described first throttle element is electric expansion valve.
CN201610817200.5A 2016-09-12 2016-09-12 Heat pump unit CN106440552A (en)

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CN104964476A (en) * 2015-07-15 2015-10-07 重庆美的通用制冷设备有限公司 Air-cooled heat pump unit
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000121174A (en) * 1998-10-21 2000-04-28 Sanyo Electric Co Ltd Air conditioner
CN101140122A (en) * 2007-09-30 2008-03-12 无锡同方人工环境有限公司 Heat pump machine group of combined throttling set
CN101392969A (en) * 2008-10-23 2009-03-25 浙江理工大学 Heat pump air conditioning system
CN101520216A (en) * 2009-03-25 2009-09-02 珠海天济能源科技有限公司 Air conditioner water heater
CN102418969A (en) * 2011-08-05 2012-04-18 东南大学 Integral air source and ground source composite heat pump device
CN102878724A (en) * 2012-10-19 2013-01-16 哈尔滨工业大学 Water and refrigerant heat exchanger with evaporative heat exchange and condensing heat exchange functions
CN104114964A (en) * 2012-11-26 2014-10-22 松下电器产业株式会社 Refrigeration cycle device and hot water-producing device provided therewith
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CN203586601U (en) * 2013-09-27 2014-05-07 深圳麦克维尔空调有限公司 Enhanced-vapour-injection type air-conditioning device
CN203586629U (en) * 2013-12-08 2014-05-07 合肥天鹅制冷科技有限公司 Air source heat pump air conditioning unit with multiple switchable heat exchangers
CN104964476A (en) * 2015-07-15 2015-10-07 重庆美的通用制冷设备有限公司 Air-cooled heat pump unit
CN205209003U (en) * 2015-07-24 2016-05-04 重庆美的通用制冷设备有限公司 Water refrigerating unit

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